Bell, who supplied the voice of Anna in Frozen, now the top-grossing animated film ever, performed her Do You Want to Build a Snowman song live in February during an event at Los Angeles' Vibrato Grill Jazz club.

Before performing the song, Bell told the audience that she had wanted to be a Disney princess since she was 5 years old. But what was even more special than playing one, she says, was that "I was able to shape a type of heroine that I wanted to see, that I would have identified with when I was 5."

She then proceeded to sing Do You Want to Build a Snowman using all three of Anna's voices from the different stages of her life.

A video of that performance has now started to viral. Watch it, and you'll understand why.